Watch List notes:

ISLAMIC, 'Abbasid Caliphate. Al-Mu'tadid, AH 279-289 / AD 892-902. Half Dirham (Silver, 10 mm, 0.77 g, 12 h), donative issue, Without mint name, AH 280 = AD 893/4. Album 242B. SICA IV, 1733 var. (differing date). Very rare. Traces of mounting and with scratches, otherwise, fine.